Gardner Denver GDF0128LFG compressed air filter (Grade G)

Gardner Denver — a global leader in the manufacture of compressed air equipment and air treatment systems — presents the GDF Grade G filter series, designed for reliable protection of pneumatic systems. This is a key component for fine compressed air purification, engineered to remove contaminants that can cause corrosion, equipment damage, and product spoilage.

Grade G — Fine Filtration class (General Purpose). These filters ensure the removal of solid particles down to 0.1 micron and reduce residual lubricant content to 0.1 mg/m³.

Technical Specifications: Gardner Denver GDF0128LFG

• Model: GDF0128LFG

• Connection Size: DN50 PN16

• Maximum Particle Size: 0.1 μm

• Residual Lubricant Content: 0,03 mg/m³

• Flow Rate at 7 bar: 12.8 m³/min

• Maximum Pressure: 16 bar

• Height: 552 mm

• Length: 285 mm

• Diameter: 133 mm

• Weight: 8.0 kg

  
  

Design Features

• Industrial Standard Steel Housing

Unlike smaller models, this housing is constructed from welded structural steel. This ensures maximum mechanical stability when operating with high air flow rates. Each housing undergoes rigorous pressure testing and complies with international safety standards for pressure vessels.

• Anti-Corrosion Coating

To protect against aggressive lubricant-water emulsions, the steel housing undergoes a comprehensive treatment. Both external and internal surfaces are coated with a special protective layer that prevents rust and guarantees a long service life (decades) in demanding industrial environments.

• No-Loss Automatic Drain Options

The industrial series models are equipped with two types of condensate drainage systems that operate without compressed air leaks:

• Float Drain: A reliable mechanical drain operating on the float-rise principle. It requires no electricity and triggers automatically as liquid accumulates.

• Electronic No-Loss Drain: An intelligent electronic condensate drain with a level sensor. It ensures precise condensate discharge without any pressure loss, representing the most energy-efficient solution.

  
  

Operating Technology

Air purification occurs in three stages through a combination of physical laws and innovative element structure:

1. Pre-separation: At the steel housing inlet, the flow is directed through a system of internal baffles. This causes large moisture droplets and scale to settle at the bottom even before contacting the filter element.

2. Deep Filtration: Air passes through multi-layered glass fiber. Due to gradient density, dust particles and lubricant mist down to 0.1 μm are trapped within the material depth, where small droplets merge into larger ones and flow downwards.

3. Automatic Removal: Accumulated condensate enters the chosen drain chamber (Float or Electronic), which opens only when full, preventing the leakage of valuable compressed air.

Key Advantages

✅ High Filtration Efficiency: Effective removal of particles down to 0.1 μm and lubricant, protecting critical production processes.

✅ Energy Efficiency (Zero Loss): Automatic drainage systems eliminate leaks of expensive compressed air.

✅ Minimal Pressure Drop: Less than 0.1 bar on a clean element, directly reducing the compressor's energy consumption.

✅ Reliable Flanged Connection: Guarantees airtightness and ease of installation in large main pipelines.

Installation Recommendations

For maximum efficiency, GDF Grade G filters are recommended to be installed:

• After a Pre-filter (Grade P): A mandatory requirement to protect the fine element from premature clogging by large particles.

• Before a Refrigerant Dryer: To protect the heat exchanger from lubricant film buildup.

• After the Air Receiver: To remove condensate and particles formed within the vessel.

• At the Inlet of Critical Equipment: As a reliable barrier for pneumatic cylinders, valves, and tools.

For assistance in selecting the most suitable Gardner Denver GDF model to meet your performance requirements, or for consultation on additional options, please contact our specialists.